it's unusualthat he can speak five languages.改同义句it's unusualthat he can speak five languages.改成（It's...to...）的句式.it's...to 中间加的是形容词对把、？那、usual for him是形容词吗？

it's unusualthat he can speak five languages.改同义句it's unusualthat he can speak five languages.改成（It's...to...）的句式.it's...to 中间加的是形容词对把、？那、usual for him是形容词吗？
it's unusualthat he can speak five languages.改同义句
it's unusualthat he can speak five languages.改成（It's...to...）的句式.
it's...to 中间加的是形容词对把、？
那、usual for him是形容词吗？

it's unusualthat he can speak five languages.改同义句it's unusualthat he can speak five languages.改成（It's...to...）的句式.it's...to 中间加的是形容词对把、？那、usual for him是形容词吗？
1.答案：
It's unusual that he can speak five languages.
改成（It's...to...）的句式,即为：
= It's (unusual for him) to (speak five languages).
2.更正,是unusual for him.
unusual是形容词,而for him是后面不定式的逻辑主语,不加的话则此句句意不完整.

usual for him是形容词

It's usual for him to speak five languages,对他来说说五种外语很平常